Thread: Sigma 18-35mm ART and UMP G2 - Focus Issue

Results 1 to 6 of 6
  1. #1 Sigma 18-35mm ART and UMP G2 - Focus Issue 
    Senior Member
    Join Date
    Aug 2014
    Posts
    2,240
    I usually focus manually when shooting professionally but yesterday I used the UMP G2 with the Sigma 18-35mm ART lens to just shoot some home video with my family. I put the lens to AF so I can use the auto focus on the camera handgrip. To my dismay, every time I press the AF button on the camera the focus was very slow, most of the time it goes out of focus and then starts to hunt for focus as I try to find a suitable edge to focus on. You can hear the lens motor going while it's trying to focus. Is this normal or is there something wrong with the AF system of the lens or the camera?
    Reply With Quote  
     

  2. #2  
    Senior Member
    Join Date
    Oct 2016
    Posts
    452
    Normal. BM cameras don’t have autofocus, essentially.
    Reply With Quote  
     

  3. #3  
    Senior Member
    Join Date
    Mar 2015
    Location
    USA N. CA
    Posts
    3,202
    It a,so needs a sharp contrasting line to focus on.
    Cheers
    Reply With Quote  
     

  4. #4  
    Senior Member
    Join Date
    Oct 2016
    Posts
    452
    Quote Originally Posted by Denny Smith View Post
    It a,so needs a sharp contrasting line to focus on.
    Cheers
    Reminds me of the first camera-body autofocus camera - the Minolta 7000 - which still focuses faster with just one center focus point.
    Reply With Quote  
     

  5. #5  
    Senior Member
    Join Date
    Aug 2014
    Posts
    2,240
    I can focus faster using my hands.
    Reply With Quote  
     

  6. #6  
    Senior Member jambredz's Avatar
    Join Date
    Apr 2012
    Location
    Kingston, Jamaica
    Posts
    4,380
    It's not really auto focus.... Its push to focus. BM cams do not have continuous auto focus. It has been like this since the very first BM camera.
    Darren Scott
    Freelance Director/Director of Photography


    https://vimeo.com/jambredzvisions/videos
    Reply With Quote  
     

Similar Threads

  1. Replies: 0
    Last Post: 04-21-2017, 10:01 AM
  2. WTB: Canon EOS 1v - 35mm SLR & Sigma 35mm 1.4 ART
    By yophoto91 in forum For Sale / Want to Buy
    Replies: 0
    Last Post: 11-06-2016, 10:54 PM
  3. Replies: 3
    Last Post: 05-28-2016, 03:33 AM
  4. Panasonic 12-35mm for Sale or trade of Sigma 18-35mm (Nikon Mount)
    By J.F.R. in forum For Sale / Want to Buy
    Replies: 1
    Last Post: 05-31-2014, 12:23 PM
  5. Sigma 18-35mm Nikon = Not so Good NEWS from SIGMA
    By J.F.R. in forum Lens Discussion
    Replies: 6
    Last Post: 09-27-2013, 02:57 PM
Bookmarks
Bookmarks
Posting Permissions
  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •